Motorcycle helmet



FIG. 1 is a left side elevational view of a motorcycle helmet showing my new design as seen when worn; the right side view being a mirror image thereof;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front perspective view thereof; and

FIG. 7 is a rear perspective view thereof. 

The ornamental design for a motorcycle helmet, as shown and described. 